Serial port issue with Robin Lite

[jaymcd]

I am getting errors with serial ports on compile --

In file included from Marlin\src\HAL\STM32\MarlinSPI.h:24,
from Marlin\src\HAL\STM32\MarlinSPI.cpp:26:
Marlin\src\HAL\STM32\HAL.h:65:4: error: #error "SERIAL_PORT must be from 1 to 6. You can also use -1 if the board supports Native USB."
65 | #error "SERIAL_PORT must be from 1 to 6. You can also use -1 if the board supports Native USB."

Not sure if this is a vscode issue or a platform issue or a board/library issue. It was obviously working before as the default config seems to be for -1 or 0. I have tried both with no success. It will compile if I change to value 1 -6 ....

[fjbold1]

I was able to use -1, not at first but after enabling native usb in the adv file.

[k2ksk2k]

According to MKS-Robin, you can try the settings "#define SERIAL_PORT 3" and "#define SERIAL_PORT_2 1".